Calculate the pH of a 0.60 M solution of NH3
1 answer:
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Answer: Option (c) is the correct answer.
Explanation:
As we know that density the amount of mass present in per unit volume.
Mathematically, Density =
So, it means that density is inversely proportional to volume. Hence, when there will be decrease in density of a substance then there will be increase in its volume. That is, expansion of substance will take place.
Also, boiling point of copper is 2,562 degree celsius but we are heating it up to a temperature of 95 degree celsius. This means that copper will remain in liquid state at this temperature.
Thus, we can conclude that a change which occurs in a sample of copper is that copper sample will expand.
Answer: 2.796 grams
Explanation:
According to stoichiometry:
1 mole of reacts with 1 mole of
0.012 moles of will react with=
of
Thus is the limiting reagent as it limits the formation of product.
is the excess reagent as (0.018-0.012)=0.006 moles are left unused.
1 mole of produces 1 mole of
0.012 moles of will produce=
of
Mass of
Thus 2.796 grams of are produced.